According to reports from the official Chinese news agency Xinhua, health agencies in Shanghai have concluded that while levels of antibiotics and steroids in KFC chicken are not considered unsafe, the company has failed to keep a close-enough eye on its suppliers.

McDonald's poultry supply has also been implicated in the scare and the company has seen a drop in sales in China.

The company has a stated commitment to animal welfare, including an online Corporate Responsibility Report that outlines its beliefs and practices both domestically and internationally. Gut Check has reached out to Yum's animal-welfare experts for comment.

On October 9 of last year, Yum's share price stood at $66.04. On November 29, it topped out at $74.47.

On January 7, according to today's press release from Bronstein, "Yum revealed in a filing with the SEC the Company lowered its China Division's full-year 2012 guidance for same-store sales, due to publicity surrounding the Chinese government's review of Yum's poultry supply. As a result of these disclosures, on January 8, 2013 Yum shares dropped 5%, from $67.89 per share to as low as $64.40 per share."

The biggest drop -- 10 percent in a single day -- came on November 30, one week after news first surfaced in China about the food scare.

Yum's share price closed yesterday at $64.59.

A report yesterday from the Reuters news agency indicates that Yum "has apologized to customers in China over its handling of the food scare."